Centering means for feed-guides.



R.A.'GALLY GENTERING MEANS FOR FEED GUIDES.

APPLICATION FILED JUNE 1, 1914.

Patented Sept. 1, 1914.

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'10 y and other means for 'UNITED STATES PATENT OFFICE.

BQBEBQT A. GALLY, OF CINCINNATI, CHIC, ASSIGNOR TO THE BALDWIN COMPANY,

. CINCINNATI, OHIO.

GENTEEING MEANQ FOR FEED-GUIDES.

Patented Sept. 1, 1914.

573. i q Specification Letters Patent. Application filed June 1, i914. Serial No. 842,117. T all ho it may on er at normal distance, or reater or less than cinnati, in the county of Hamilton and State of Ohio, have invented a certain new and i Previous devices in this art have employed Be it known that "I, Ronnn'r A. GALLY, a citizen of the UnitedStat'es, residing at Cmuseful Improvement in Centering Means for Feed-Guides, of which the following s a specification.

crab lever or screw control'of'edge gui es,

direct control of guidance of travel of bars, strips or, webs having sufficient strength of substance to stand up to such guidance, while for weak materials such as thin paper for printing machinery orvmus1c playing apparatus detector air tension-controlling apertures, or sensitive such bars, strips orwebs,

. in my fingers have been em iloyedtone or both edges or margins oft 'e-web to avoid damaging its material, the guiding shift of the webv being done through secondary mechanisms of pneumatic or electric design controlled from suchapertures or fingers and actin on the spool, roller, drum, spindles or ot er means carrying 'and forwarding the web. With the variation of widthof from the determined standard, especially those changes of paper caused by hygrometric variations of the atmosphere, many of those devices would be unable to determine the true center except of exactly normal width material, wherefore hand adjusting means have added to correct such errors, or a plurality of detecting apertures have been positioned at two positions of the varying widths. Such hand adjusting means when alternative of'the automatic adjustment, as in my Patent No.'1,093,046, of April 14, 1914, safely remed thetrouble, but calls for personal attentlon. Any hand adjusting means altering the position of guidance of the automatic means leads to trouble when wrong settingis overlooked by the user. The plutirality of detecting apertures requires a multiplication of valve controls, etc., and unduly. complicates the apparatus.

vIn the present invention only two detecif for thin material such as paper, preferably fingers of the very strong yet delicate structure shown Patent No. 1,093,179,.of April 14, 1914, said fingers being adjusted so as to contact the two edges of the bar, strip or g of the invention; controlling valve block in plan view showing positions of parts when momentarily iditio-n; Fig. 4 an elevation from the right end of the device; and Fig. 5a modified form of the floating? means.

been

lweb 1 is carried spindles 3 and 4, the'web being drawn. from' lsaid roll on to-a spool 5, which is revolved,

.by a pulley 6 and belt 7 or any other suit-- .able means. pressed toward each other by a'coil spring -8 acting -3 and the left arm 10 of yoke 11, the right arm 12 of said yoke 11 standing outside of a fixed collar two spindles being web at all times, whether the two edges are in common motion.

normal. Combined wit the two edge. detectors is a third member of a floatin character, having its part which controls t esh ftmg mechanism, so disposed and connected relative to the two detectors that variation of width of the material between the fingers so long as the material is traveling 1n its true central position will move the said controlling part in close relation to the actuators but not operating the shifting means, but that when the material at any width moves to either side of its true central line of travel, the said controlling part of the floatingimember will be deflected to one side or the other ofits median position and cause the actuator of the shifting means to put the shifting means in operation to return the traveling material to its true central path and the controlling part of the floating member be also brought to its 1 normal neutral condition through the action of the restored traveling material on the two I detectors. I

In the drawings, Figure 1 is a plan view Fig. 2 a rear view of the section; Fig. 3 a

out of normally centered con- The present invention is 'now to be under- In the structure now shown a sheet or on a roll2 supported on The two spindles 3 and 4 arebetween a collar 9 fast on spindle 13 ,on the spindle 4, the thus held together in axial engagement with the music roll 2, therefore any motion ex erted lengthwise of the yoke 11 and the spindles 3 and 4 will serve to move the yoke, spindles and roll The automatic control illustrated {-as applied to the central guidance of a per- -forated music sheet of a se iapparatus, although its use 1s 'stoodas claimed for any purpose where it may be desirable.

- arms 34 and of said detectors lying in I member being engaged on corresponding of the lengthwise position of the roll 2 is attained by the action of the pneumatic motors 14 and 15, which are set in operation by suitable valves 16 and 17 and their pneumatics 18 and 19. Motor. 14.- is con-' nected to valve 16 by a tube 20, and motor I 15 to valve 17 by a tube 21. A ,tube 22 leads from the pneumatic 18 to theactuator valve 23, whereby the opening'of said actuator will cause the operation of motor 141; while a tube2-1 leads from 'the 'neumatic 19 to the actuator valve '25 l hese two actuator valves 23 and24' cover vent openings at the terminals of tubes-'22 and 24, being preferably-suspended on-the slightly slanted vertical faces of the vent block 26, so that but little power is required'to throw them oil their seats. Lying between the 29 and 30, by which center holes'its-p0sition and movements are controlled, said cen' ter holes being normally approximately in a line with the two centers 30e-and 31'of kicker arm 27 closely set to the valves 23 and 25, any shift of the web travel can be but momentary, as also the time of o ening eration,, o the pneumatic In Fig; is shown wherein the 'floating member 36 has its rear part '37 I normally- 'cover'ng both ports 38 and 39 which control ment of valve so-disturbed from normal by deviation of the we one or the other of said ports'38 or setting into operation the corresponding motors 14 or 15, I

It is to be understood that the present invention is Clallld any center gui in may be desirable, ical or other equivalentsof pneumatic valves, motors and ployed in'lieu of such valves,,mot0rs and f connections and yet ;to my invention.

from central of the valves and the op- 'motors. I a modified form disposed as a sliding valve tubes 22 and 24, the movepart 37 to eithenside when b from central travel then opening not only as applied to of a feed where same ut that electric, mechan- '86 connections may be emsuch devices be subject I the two detectors 32 and 33, the control a I I that same general line,- and being'a't right angles to the detector fingers32 and 33', and the center holes 29 and. 30 of the floating pins at the inward ends of the control arms 34 and 35. Counterweights 34 and 35 lessen the pressure of the fingers 32' and 33 against the web.

With the kicker arm 27- in normal position with both valves 23 and 25 seated, the h detector fingers 32 and 33 stand with their inner or contact faces at an equal distance from the'true center line of travel of the web 1, and any variation in Width of such web so long as it is central will only in-' crease or decrease the distance between said contact faces and draw the entire floating member 27, 28 forward and back in astraight line so that the valves 23 and 25 are not disturbed from their seats, as'shown by dotted lines in Fig. 1. I Whenever the web 1, whether wideror narrower than the normal medium, runs off the true central path of travel as in Fig. 3, the floating member 27 ,28 will be slightly revolved on its two center holes 29 and 30 and its kicker arm 27 moved to one sideof its normal alinement and move' the "cor responding valve 23 or 25 from its se'at and thus set in operation the pneumatic motors 14 or 15, the action whereof will restore the web, fingers, floating member and valve to normal. so long as the travel" of the web, is central, both valves 23 and-25 are closed and therefore no air lost, whether the web is wide or narrow, and'as the detector fingers 3.2 and 33 are always in contact with the edges of the web 1 and the 50f the=two opposite-extremes .of said'lesser floating means havin similar direction to the said lineof travel as the said material-varies in "width but remains central.

2. In a feed-centering device; means to cause a material to'travel in the line of its material truly centered to said determining means comprisin two .0 posed detector means, ,two opposite extremes varied dimension of said material, a floatin de t ectors, floating means and adapted to control the travel of line of travel irrespective of the the said lesser dimension within the limits of operative movement of said floating means having a r c aim as my invention 2- i 1.'I1 1 a feed-centering device; means to causje amaterial to travel in the line of its j greatest dimension, .said travel of said a second lesser and imaterial truly centered to said line of Stravel, said determining means comprising two opposed detector means, one at each and means to determine material by gaging by varied dimension of said .and varied dimension of'said material, a

oati'ng'means co-acting detectors, and floating means travel of said material centrally to said line of travel"irrespective of the width of the I said lesser operative movement of said detectors, said with" both said two means controlled by said and adapted tocontrol the dimension within the limits of g a bodily motion in said line of travel,

one at eac oft e 120 of said lesser and" means said two by said oo-acti'ng with both and means controlled said material centrally to said width of said detectors,

bodily motion in similar direction to the said line of travel as the said material varies in width but remains central and a controlling part of said floating means having a motion transverse to the line of travel when said material departs from said centered line of travel.

3. In a feed-centering device; means to cause a material to travel in the line of its greatest dimension, and means to determine said travel of said material by gaging by a second lesser and varied dimension of sai material truly centered to said line of travel, said determining means comprising two opposed detector means, one at each of the two opposite extremes of said lesser and varied dimension of said material, a floating means co-acting with both said two detectors, and means controlled by said floating means and adapted to control the travel of said material centrally to said line of travel irrespective of the width of the said lesser dimension within thelimits of operative movement of said detectors, said floating means having a bodily motion in similar direction to the said line of travel as the said material varies in width but remains central and a controlling part of said floating means having a motion. transverse to the line of travel when said material departs from said centered line of travel, and a valve means at each side of said controlling part of said floating means and adapted to be moved in the direction of said transverse motion. 7

4:. In a feed-centering device; means to cause a material to travel in the line of its greatest dimension, and meansto determine said travel of said material by gaging by a second lesser and varied dimension of said material truly centered to said line of travel, said determining means comprising two opposed detector means, one at each of the two opposite extremes of said lesser and varied dimension of said material, a floating means co-acting with both said two detectors, and means controlled by said floating means and adapted to control the travel of said material centrally to said line of travel irrespective of the width of the said lesser dimension within the limits of operative movement of said detectors, said floating means having a bodily motion in similar direction to the said line of travel as the said mate rial varies in width but remains central, and a controlling part of said floating means having a motion transverse to the line of travel when said material departs from said centered line of travel, and two control ports controlled by said controlling part of said floating means and adapted to be alternately opened by the right and left motion of said controlling part as it is moved in the direction of said transverse motion.

5. In a feed-centering device; means to cause a material to travel in the direction lesser dimension, and

its greatest dimension,

of its greatest dimension, two contact fingers disposed to bear one against each extreme of a lesser dimension of said material, each said finger movable in the direction of said lesser dimension, and each said finger having an extension substantially at right angles to said finger and projecting in o posite directions and substantially in alinement with the other, said fingers and their extensions having revoluble bearings at their junctures, a floating member having a pivotal connection with the free end of each said extension, said floating member having a controlling part thereof distant from the line on which the two pivotal connections lie, means for determining the central travel of said material, and dual control elements of said center determining means, said dual control elements disposed to be alternately operated by a motion of said fingers and the controlling partof said floating means when said material and fingers are deflected from their true centralized position. 7

6. In a feed-centering device; means to cause a material to travel in the direction of its greatestdimension, two contact fingers, disposed to bear one against each extreme of a lesser dimension of said material, each said finger movable in the direction of said each said finger having an extension substantially at right angles to said finger and projecting in opposite directions and toward each other and substantially in alinement with the other, said fingers and their extensions having revoluble bearings at their junctures, a floating member having a pivotal connection with the free end of each said extension, said floating member lying between said extensions and having a controlling part thereof distant from the line on which the two pivotal connections lie, means for determining the central travel of said material, and dual elements of said center determining means, said dual control elements disposed to be alternately operated by a motion of said fingers and the controlling part of said floating means, when said material and fingers are deflected from their true centralized position.

7. In a feed-centering device; means to cause a material to travel in the direction of two contact fingers disposed to bear one against each extreme of a lesser dimension of said material, each said finger movable in the direction of said lesser dimension, and each saidfinger having an extension substantially at right angles to said finger and proj ectingjn opposite directions and substantially in almement with the other, said fingers and their extensions having revoluble bearings at their junctures, otal connection with the free said extension, said floating member having a floating member having a pi'vend of each 1:0

. control-.l elements 16 from their; true" centralized 5 part of said floating means controlling part.

a; controlling part thereof distant from the Substantially parallel to and at a distance line on'fwhi'ch' the two pivotal connections from the similar finger of the other crank,

lie, means for determining the central travel of'saidffinaterial, and dual control elements 6- ofisa'idcenter determining means, said dual disposed to be alternately operated by'a' motion of said'fingers and the controlling part of said floating means when said material and fingers are deflected position, said coarsening partofsa-id floating means havingaiin'otion in jdirection of said travel line when said fingers are extended or contracted arting from true normal centered posit on tothe said travel line, said dn'alcontrol elements being inoperative during-'fanysiichstraiglit line action of the said control-ling part?" 1 1 '8. '-In; a feed-centering device; means to cause a material to travel in the direction of as greatest dimension, two contact fingers of a lesser dimension of said materiaheach saldfinger movable intlie direction of said ins; an" extension lesser dimensiomiand each said finger havsubstantially at vright angles to said "fingeran'd projecting incpposite-directions "and toward each other and substantially in alinement with the other,

* said-fingers; their extensions having revolublegbearings at their junctures; a floating member having a": pivotal connection with thefree 'ie'nd' ofeach said extension, said.

- 'floa'ting--member lying between and having 35.

a; controlling part'theieofdistant from the line on which the two pivotal connections lie,-means for determining the central travel of said material, and dual elements of said centerdetermining means,said dual control elements'disposed to be alternately operated by'a motion. of said fingers and the controlling part of said floating means when said -r'na'terial and fingers are deflected from their true centralized position, said controlling having a motion in direction ofsaid travel line when said fingers are extended or contracted without departing from true normal centered position to the said travel line, said dual control elements being inoperative during any such straight line action of the said 9. In a feed-centering device; two detector means of bell-crank form disposed and revoluble in substantially one plane with one contact finger arm of each crank the inner faces of the two said contact fingers being disposed to contact the two opposite edges ofa web to be guided, the

' other armof each said crank extending toward the similar arm of the other, these second arms standing in a common line with a distance between their movable ends, a floating member co-actin'g with each of said second arms at its movable end, said floating member having a controlling part thereof distant from the line on which the two pivotal connections lie, means for determining the central travel of said material, and dual control elements means, said dual control elements disposed to be. alternately operated by a motion of said fingers and the controlling part of said floating means when said material and fingers are deflected'from their true cend-is'posed to bear one against each extreme:

tralized position.

form disposed with one contact'finger arm of each crank substantially parallel to and at a distance from the similar finger of the other crank, the inner faces of the two said contact fingers being disposed to contact the two of said center determining In a-feed-centering device; two detector means of bell-crank and revoluble in substantially one plane opposite edges of a web to be guided, the

other arm of each said crank extending toward the similar arm of the other, these second arms standing in a common line with a distance between their movable ends, a floating member having. three acting parts positioned in triangular relation, one of said parts co-acting with the movable end of one of said second arms, and another one of said parts co-acting with the other movable end of the other of said second arms, and the third part of said floating a controlling part, means for determining the central travel of said material, and dual control elements of said center determining means, said dual control elements disposed to be alternately operated by a motion of said fingers and the controlling part of said floating means when said material and fingers are deflected from their true centralized position.

ROBT. A. GALLY.

, Witnemes:

J. H. 'BROADHURBT, J.' W. MAGY.

I Copies of this patent may be obtained for five cents each, by addressing the Commissioner of I'atents,

Washington, D. 0. 

